For you search query Spiff we found around 234989 songs. We may show you only some of them on this page. spiff definition: an amount of money paid by an employer or the manufacturer of a product to a sales person for selling a particular product. Learn more. A spiff, or spiv is slang for an immediate bonus for a sale. Typically, spiffs are paid , either by a manufacturer or employer, directly to a salesperson for selling a.